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/* ************************************************************************* |
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* Copyright (c) 2005 VMware, Inc. |
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* Copyright (c) 2011 - 2017 Andreas Persson |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining |
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* a copy of this software and associated documentation files (the |
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* "Software"), to deal in the Software without restriction, including |
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* without limitation the rights to use, copy, modify, merge, publish, |
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* distribute, sublicense, and/or sell copies of the Software, and to |
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* permit persons to whom the Software is furnished to do so, subject to |
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* the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be |
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* included in all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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* *************************************************************************/ |
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#include "wrapLabel.hh" |
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#ifdef PANGOMM_HEADER_FILE |
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# include PANGOMM_HEADER_FILE(pangomm.h) |
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# include PANGOMM_HEADER_FILE(pangommconfig.h) |
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#else |
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# include <pangomm.h> |
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# include <pangommconfig.h> |
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#endif |
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// we don't need this WrapLabel helper class on GTKMM 3 and higher |
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#if GTKMM_MAJOR_VERSION < 3 |
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/* |
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* wrapLabel.cc -- |
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* |
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* A wrappable label widget. |
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*/ |
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namespace view { |
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/* |
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*----------------------------------------------------------------------------- |
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* |
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* view::WrapLabel::WrapLabel -- |
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* |
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* Constructor. |
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* |
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* Results: |
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* None. |
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* |
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* Side effects: |
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* None. |
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* |
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*----------------------------------------------------------------------------- |
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*/ |
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WrapLabel::WrapLabel(const Glib::ustring &text) // IN: The label text |
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: mWrapWidth(0), |
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mWrapHeight(0) |
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{ |
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// new enums introduced in unstable pangomm 2.41.3, but not in stable 2.42 |
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#if PANGOMM_MAJOR_VERSION > 2 || (PANGOMM_MAJOR_VERSION == 2 && ((PANGOMM_MINOR_VERSION == 41 && PANGOMM_MICRO_VERSION >= 3) || PANGOMM_MINOR_VERSION > 42)) |
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get_layout()->set_wrap(Pango::WrapMode::WORD_CHAR); |
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#else |
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get_layout()->set_wrap(Pango::WRAP_WORD_CHAR); |
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#endif |
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set_alignment(0.0, 0.0); |
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set_text(text); |
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} |
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/* |
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*----------------------------------------------------------------------------- |
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* |
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* view::WrapLabel::set_text -- |
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* |
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* Override function for Label::set_text() that re-sets the wrapping |
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* width after the text is set. |
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* |
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* Results: |
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* None. |
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* |
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* Side effects: |
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* None. |
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* |
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*----------------------------------------------------------------------------- |
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*/ |
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void |
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WrapLabel::set_text(const Glib::ustring &str) // IN: The text to set |
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{ |
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Label::set_text(str); |
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SetWrapWidth(mWrapWidth); |
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} |
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/* |
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*----------------------------------------------------------------------------- |
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* |
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* view::WrapLabel::set_markup -- |
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* |
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* Override function for Label::set_markup() that re-sets the wrapping |
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* width after the text is set. |
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* |
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* Results: |
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* None. |
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* |
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* Side effects: |
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* None. |
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* |
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*----------------------------------------------------------------------------- |
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*/ |
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void |
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WrapLabel::set_markup(const Glib::ustring &str) // IN: The text to set |
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{ |
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Label::set_markup(str); |
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SetWrapWidth(mWrapWidth); |
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} |
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/* |
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*----------------------------------------------------------------------------- |
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* |
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* view::WrapLabel::on_size_request -- |
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* |
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* Override handler for the "size_request" signal. Forces the height |
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* to be the size necessary for the Pango layout, while allowing the |
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* width to be flexible. |
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* |
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* Results: |
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* None. |
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* |
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* Side effects: |
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* None. |
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* |
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*----------------------------------------------------------------------------- |
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*/ |
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void |
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WrapLabel::on_size_request(Gtk::Requisition *req) // OUT: Our requested size |
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{ |
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req->width = 0; |
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req->height = mWrapHeight; |
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} |
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/* |
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*----------------------------------------------------------------------------- |
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* |
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* view::WrapLabel::on_size_allocate -- |
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* |
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* Override handler for the "size_allocate" signal. Sets the wrap width |
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* to the be width allocated to us. |
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* |
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* Results: |
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* None. |
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* |
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* Side effects: |
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* None. |
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* |
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*----------------------------------------------------------------------------- |
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*/ |
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void |
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WrapLabel::on_size_allocate(Gtk::Allocation &alloc) // IN: Our allocation |
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{ |
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Gtk::Label::on_size_allocate(alloc); |
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SetWrapWidth(alloc.get_width()); |
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} |
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/* |
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*----------------------------------------------------------------------------- |
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* |
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* view::WrapLabel::SetWrapWidth -- |
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* |
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* Sets the point at which the text should wrap. |
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* |
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* Results: |
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* None. |
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* |
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* Side effects: |
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* None. |
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* |
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*----------------------------------------------------------------------------- |
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*/ |
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void |
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WrapLabel::SetWrapWidth(int width) // IN: The wrap width |
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{ |
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if (width == 0) { |
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return; |
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} |
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int xPadding, yPadding; |
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get_padding(xPadding, yPadding); |
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width -= 2 * xPadding; |
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/* |
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* We may need to reset the wrap width, so do this regardless of whether |
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* or not we've changed the width. |
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*/ |
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get_layout()->set_width(width * Pango::SCALE); |
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int unused; |
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get_layout()->get_pixel_size(unused, mWrapHeight); |
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mWrapHeight += 2 * yPadding; |
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if (mWrapWidth != width) { |
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mWrapWidth = width; |
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queue_resize(); |
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} |
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} |
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}; /* namespace view */ |
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#endif // GTKMM_MAJOR_VERSION < 3 |